从bytes对象用MXRecordIO读取

我能用什么方法 mx.recordio.MXRecordIO 读取字节对象而不是文件对象?

例如,我目前正在做:

import mxnet as mx

results_file = 'results.rec'
with open(results_file, 'wb') as f:
    f.write(results)

recordio = mx.recordio.MXRecordIO(results_file, 'r')
temp = recordio.read()

但如果可能的话,我宁愿不写文件作为中间步骤。我试过用BytesIO,但似乎没法用。